I'dsay their names in genderbent version would be:Karkat=Karkal ( CAR-CAL (LIKE LIL CAL) )Sollux=Sollen (SOUL-LEAN)Gamzee=Gamila (GAM-E-LAH)Eridan= Erisol (ERI-SOUL AND YES I KNOW THIS IS A SHIP BUT IT STILL SUITS ERIDAN.) OR Erinda (ERI-NNN-DAH)Equius=Equina (EQU-IN-AH)()for how to say them.

In terms of Sollux's name since the original's full name is Solluxander that female's shortened wouldn't be different just the full for Solluxandra much like Alexander/Alexandra since they both can be shortened to 'Alex'